A) 20 kJ
B) 60 kJ
C) 80 kJ
D) 120 kJ
Correct Answer: D
Solution :
\[{{w}_{shaft}}=90\,\,kN.m/kg\,or\,\,90\,\,kJ/kg\] \[{{\left( \Delta h \right)}_{air}}=+\,\,30\,\,\text{kJ/kg}\] \[{{\left( \Delta h \right)}_{water}}=-\,\,40\,\,\text{kJ/kg}\] \[q={{w}_{shaft}}+{{\left( \Delta h \right)}_{air}}+{{\left( \Delta h \right)}_{water}}\] \[=90+30-40=80\,\,\text{kJ/kg}\,\,\text{or}\,\,\text{air}\]You need to login to perform this action.
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